VIIRS/NPP Moderate Resolution Terrain Corrected Geolocation 6-Min L1 Swath 750m Light V002

Description

The Visible Infrared Imaging Radiometer Suite (VIIRS) Moderate Resolution Terrain Correction Geolocation (VNP03MODLL) Version 2 product from the NASA/NOAA Suomi National Polar-orbiting Partnership (Suomi NPP) VIIRS sensor is produced in 6 minute temporal satellite increments (swaths) at 750 meter resolution. Intersecting the VIIRS line of sight vector with Earth’s geoid and the World Geodetic System (WGS) ellipsoid, this product is based on the SRTM30 Version 2 digital elevation model (DEM), which uses GTOPO30 data for areas from 60° North to 60° South. VNP03MODLL is a terrain correction geolocation product that provides the spatial location for various VIIRS data products. Each swath of data is approximately 3,060 kilometers along track (long) and 3,060 kilometers across track (wide). Provided in the VNP03MODLL product are layers for height, latitude, and longitude. These Science Data Sets (SDS) layers / Variables are used in conjunction with the [VNP14](https://doi.org/10.5067/viirs/vnp14.002) swath product for accurate geolocation information. Known Issues * For complete information about known issues please refer to the [MODIS/VIIRS Land Quality Assessment website](https://landweb.modaps.eosdis.nasa.gov/knownissue?sensor=VIIRS). Improvements/Changes from Previous Versions * Improved calibration algorithm and better coefficients for entire Suomi NPP mission. * Improved geolocation accuracy and updates to fix outliers around maneuver periods and other events. * Corrections to the aerosol quantity flag (low, average, high) mainly over brighter surfaces in the mid to high latitudes such as desert and tropical vegetation areas. This has an impact on the retrieval of other downstream data products such as VNP13 Vegetation Indices and VNP43 BRDF/Albedo. * Improved cloud mask input product for corrections along coastlines and artifacts from use of coarse resolution climatology data. * Replaced the land/water mask input product with MODIS heritage seven class land/water mask. * More details can be found in this [VIIRS Land V2 Changes document](https://landweb.modaps.eosdis.nasa.gov/data/userguide/VIIRS_Land_C2_Changes_09152022.pdf).

Resources

Name Format Description Link
5 https://search.earthdata.nasa.gov%2Fsearch%3Fq%3DC2545310947-LPCLOUD
5 https://landweb.modaps.eosdis.nasa.gov%2F
5 https://doi.org%2F10.5067%2FVIIRS%2FVNP03MODLL.002
5 https://lpdaac.usgs.gov%2F
5 https://lpdaac.usgs.gov%2Fdocuments%2F1334%2FVNP03_User_Guide_V1.2.pdf
5 https://lpdaac.usgs.gov%2Fdocuments%2F135%2FVNP03_ATBD.pdf
5 https://www.earthdata.nasa.gov%2Fcenters%2Flp-daac
5 https://search.earthdata.nasa.gov/search?q=C2545310947-LPCLOUD
5 https://landweb.modaps.eosdis.nasa.gov/
21 VNP03MODLL.002 https://doi.org/10.5067/VIIRS/VNP03MODLL.002
5 https://www.earthdata.nasa.gov/centers/lp-daac
33 VNP03_User_Guide_V1.2.pdf https://lpdaac.usgs.gov/documents/1334/VNP03_User_Guide_V1.2.pdf
33 VNP03_ATBD.pdf https://lpdaac.usgs.gov/documents/135/VNP03_ATBD.pdf
21 VNP64A1.002 https://doi.org/10.5067/VIIRS/VNP64A1.002
5 https://search.earthdata.nasa.gov/search?q=C2847928673-LPCLOUD
5 index.cgi https://landweb.modaps.eosdis.nasa.gov/cgi-bin/QS/new/index.cgi
33 VNP64_User_Guide_v1.1.pdf https://lpdaac.usgs.gov/documents/2124/VNP64_User_Guide_v1.1.pdf
33 VNP64A1_ATBD_V1.pdf https://lpdaac.usgs.gov/documents/572/VNP64A1_ATBD_V1.pdf
5 https://ladsweb.modaps.eosdis.nasa.gov/filespec/VIIRS/1/VNP64A1
21 Val_overview.html https://viirsland.gsfc.nasa.gov/Val_overview.html
22 BROWSE.VNP64A1.A2024214.h09v04.002.2024277101833.1.jpg https://data.lpdaac.earthdatacloud.nasa.gov/lp-prod-public/VNP64A1.002/VNP64A1.A2024214.h09v04.002.2024277101833/BROWSE.VNP64A1.A2024214.h09v04.002.2024277101833.1.jpg
5 https://search.earthdata.nasa.gov/search?q=C2545310947-LPCLOUD
5 https://landweb.modaps.eosdis.nasa.gov
5 VNP03MODLL.002 https://doi.org/10.5067/VIIRS/VNP03MODLL.002
33 VNP03_User_Guide_V1.2.pdf https://lpdaac.usgs.gov/documents/1334/VNP03_User_Guide_V1.2.pdf
33 VNP03_ATBD.pdf https://lpdaac.usgs.gov/documents/135/VNP03_ATBD.pdf
0 The metadata's original source. https://cmr.earthdata.nasa.gov/search/concepts/C2545310947-LPCLOUD.iso19115

Tags

  • earth-science-sensor-characteristics-spectral-engineering-geolocation

Topics

Categories